Keithley Instruments, Inc.
Cleveland, Ohio 44139
DRN.
CKD.
APP.
DATE
DATE
DATE
PART NUMBER
LTR
REVISIONS
APP. DATE
FORM 28777A-SBG
BRUNING 40-21 62198-SBG
SPECIFICATIONS
HW 1/17/05
Rev B
Page 1 of 2
SPEC-6221
A Released
29843
SZ 6/11/04
B 40096E
Revised
SZ 1/17/05
HW 6/11/04
SK 6/11/04
6221 AC and DC Current Source
SOURCE SPECIFICATIONS
Settling Time
1,2
(1% of final value)
Range
(+5% over
range)
Accuracy
(1 Year)
23
°
C
±
5
°
C
±
(%rdg. +
amps)
Programming
Resolution
Temperature
Coefficient/
°
C
0
°
-18
°
C& 28
°
-
50
°
C
Typical
Noise
(peak-peak)
/RMS
3,5
0.1Hz-10Hz
Typical
Noise
(peak-peak)
/RMS
3,4,5
10Hz-(BW)
Output
Response
Bandwidth
(BW) into
Short
Output
Resp. Fast
(Typical
5
)
Output
Resp. Slow
(Max)
2nA
0.4% + 2pA
100fA
0.02% + 200fA
400/80fA
250/50pA
10kHz
90
μ
s 100
μ
s
20nA
0.3% + 10pA
1pA
0.02% + 200fA
4/0.8pA
250/50pA
10kHz
90
μ
s
100
μ
s
200nA
0.3% + 100pA
10pA
0.02% + 2pA
20/4pA
2.5/0.5nA
100kHz
30
μ
s 100
μ
s
2
μ
A
0.1% + 1nA
100pA
0.01% + 20pA
200/40pA
25/5.0nA
1MHz
4
μ
s
100
μ
s
20
μ
A
0.05% + 10nA
1nA
0.005% + 200pA
2/0.4nA
500/100nA
1MHz
2
μ
s 100
μ
s
200
μ
A
0.05% + 100nA
10nA
0.005% + 2nA
20/4nA
1.0/0.2
μ
A
1MHz
2
μ
s
100
μ
s
2mA
0.05% + 1
μ
A
100nA
0.005% + 20nA
200/40nA
5.0/1
μ
A
1MHz
2
μ
s 100
μ
s
20mA
0.05% + 10
μ
A
1
μ
A
0.005% + 200nA
2/0.4
μ
A
20/4.0
μ
A
1MHz
2
μ
s
100
μ
s
100mA
0.1% + 50
μ
A 10
μ
A
0.01% + 2
μ
A 10/2
μ
A 100/20
μ
A
1MHz
3
μ
s 100
μ
s
ADDITIONAL SOURCE SPECIFICATIONS
OUTPUT RESISTANCE:
>10
14
Ω
. (2nA/20nA range)
OUTPUT CAPACITANCE:
<10pF, <100pF Filter ON. (2nA/20nA
range)
LOAD IMPEDANCE:
Stable into 10
μ
H typical, 100
μ
H with Output
Response SLOW.
CURRENT REGULATION:
Line:
<0.01% of range.
Load:
<0.01% of range.
VOLTAGE LIMIT (Compliance):
Bipolar voltage limit set with
single value. 0.1V to 105V in 0.01V programmable steps.
Accuracy for 0.1V to 20V: 0.1% +20mV, accuracy for 20V to
105V: 0.1% + 100mV
MAX. OUTPUT POWER:
11W, four quadrant source or sink
operation.
GUARD OUTPUT:
Maximum Load Capacitance:
10nF.
Maximum Load Current:
1mA for rated accuracy.
Accuracy:
±
1mV for output currents <2mA (excluding output lead
voltage drop).
PROGRAM MEMORY:
(offers point-by-point control and
triggering, e.g. Sweeps)
Number of Locations:
64K.
EXTERNAL TRIGGER:
TTL-compatible EXTERNAL TRIGGER
INPUT and OUTPUT.
Max Trigger Rate:
1000/s.
Source Notes
1. Settling times are specified into a resistive load, with a maximum resistance
equal to 2V / I
fullscale of range
.
See manual for other load conditions.
2. Settling times to 0.1% of final value are typically <2x of 1% settling times.
3. Noise current into <100
Ω
.
4. RMS Noise 10Hz-20MHz (2nA – 20mA Range) Less than 1mVrms, 5mVp-p
(into 50
Ω
load).
5. Typical values are non-warranted, apply at 23
°
C, represent the 50
th
percentile,
and are provided solely as useful information.
Summary of Contents for 6220 DC
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Page 36: ...1 20 Getting Started Model 6220 6221 User s Manual Return to Section 1 topics...
Page 131: ...6 10 Averaging Filter Math and Buffer Model 6220 6221 User s Manual Return to Section 6 topics...
Page 148: ...A Specifications...
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